Ranges: 2-14″, 5-72″, 10-240″
Broad beam sensor
On/off output, dual transducers

Download RPS-102 Datasheet

Product Description

  • Various Sensing Ranges
  • Broad Sensing Beam
  • Low Frequency – 38.5kHz
  • 2-Way Power Operation
  • Small Remote Transducers
  • Adjustable Delay Controls
  • 2 Multiplexed Transducers
  • LED Indicators
  • Isolated Form C Relay Outputs
  • Small Electronic Controller

The RPS-102 has 2 multiplexed transducers with independent range control adjustments, LED indicators, and form C relay outputs. This sensor also has a unique master and slave feature which enables many of the same units to be used within close proximity of one another without cross-talk interference. For example, if three sensors are needed in a close area, one sensor would be left as a master and the other two would be slaves. This is done by means of the X IN, X OUT, and GND connection on the board.

One sensor (master) would send a signal by means of the X OUT and GND terminals. These would be connected to the X IN and GND terminals of the other two sensors (slaves). With the sensors connected in this way, all units would be transmitting and receiving at the same time. This then would prevent cross-talk and enable all three sensors, or all six transducers, to be used at the same time in close proximity of one another. There are also separate turn ON and turn OFF DELAY potentiometers provided for each transducer. All four DELAY controls are located alongside the black module inside the enclosure box. The remote transducers allow for mounting of the sensor heads in cramped spaces while the controller is out of the way. The (2) independent isolated form C relays furnish N.O. and N.C. outputs. This sensor, which operates at a frequency of 38.5kHz, has a broad sensing beam which allows for detection of an object at greater angles of tilt. Sensing ranges available for the RPS-102 include 2″ to 14″, 5″ to 72″, and 10″ to 240″. Mounting flanges, LED indicators, ranging potentiometers, and 6-ft. transducer cables are included. Optional cable lengths are available.

Download RPS-102 Datasheet

Proximity Detection

Proximity detection is the detection of an object in a given range. The detection range of the RPS-102 is controlled by the “Range Control” potentiometers located on the front cover of the controller. Any object within the desired range is detected, while objects out of range are ignored. The detect point is independent of size, material, and reflectivity.

Product Specifications:
Operational Range: Adjustable 2″ to 14″
Adjustable 5″ to 72″
Adjustable 10″ to 240″
Power Input: 120VAC 120VAC
15-24 VDC
Input Current:
Ambient Temperature
40 Milliamps
Transducer Housing:
Output: N.O., N.C.
(One for each transducer)
Metal Enclosed
Isolated Form C Relay
.5 Amp Maximum
Transducer Frequency: 38.5kHz
Response Time: 2″ to 14″ 5″ to 72″ 10″ to 240″
30mS – 2S 100mS – 2S 250mS – 2S
30mS – 2S 100mS – 2S 250mS – 2S
Weight of Controller: 34.2 ounces
Weight of Transducer: 2.2 ounces


  1. Angle of Tilt
  2. Beam Spread
  3. Wiring Diag. – For RPS-102
  4. Wiring Diag. – For Master – Slave configuration
  5. Mounting Dimensions

*Dimensions show one transducer.RPS-102 comes with (2) identical tranducers.


2″ – 14″
5″ – 72″
10″ – 240″
1 Isolated Form C Relay for each Transducer
1 Isolated Form C Relay for each Transducer
1 Isolated Form C Relay for each Transducer